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Slow Changes and Fast Changes

State whether...

Question

State whether the following are physical or chemical changes.
(n) cutting wood into small pieces

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Solution

Cutting of wood is a physical change. This is because, only change in size has happened.

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Similar questions

Q. State whether true or false :
Cutting a log of wood into pieces is a chemical change.

Q. Question 2(a)
State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook.
Cutting a log of wood into pieces is a chemical change.

Question 16

Classify the following processes into physical or chemical changes:

(i) Beating of aluminium metal to make aluminium foil.
(ii) Digestion of food.
(iii) Cutting of a log of wood into pieces.
(iv) Burning of crackers.

Classify the following processes into physical or chemical changes:

(i) Beating of aluminium metal to make aluminium foil.
(ii) Digestion of food.
(iii) Cutting of a log of wood into pieces.
(iv) Rusting of iron.

Q. Say true or false
Q.B. Say whether true or false.
1. Setting of curd is a chemical change.
2. Burning of wood and cutting it into small pieces are two different types of changes.
3. Blowing of a balloon is a fast irreversible change.
4. Chopping of vegetables is a reversible physical change.

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Slow Changes and Fast Changes

Standard VII Chemistry

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